I bought a subscription from wps office to enable the premium features and it worked well on windows. Now I switched to Ubuntu and installed wps but there's no field to enter the product key to activate it. There is no option to upgrade. I have Ubuntu 22.04.1 LTS (the latest LTS). I downloaded wps from the wps-homepage Deb-Package and installed it with the command "sudo dpkg -i wps-office_11.1.0.11664.XA_amd64.deb"
Can anyone help, please?